Edit in JSFiddle 

YUI().use('dd-chooser', function(Y){
    var chooser = new Y.NekoCM.DDChooser({
        launcherNode: '#btn-color',

        items: [
            ['First item', 'val1'],
            ['Second item', 'vel2']
        ]
    });
    chooser.render();
    chooser.on('click', function(e){
        alert(this.get('value'));
    });
});
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
    "http://www.w3.org/TR/html4/strict.dtd">
<html>
    <head>
        <meta http-equiv="Content-type" content="text/html; charset=utf-8" />
        <title>Spinner Test</title>
    </head>
    <body>
        <span id="btn-color">Choose color</span>
    </body>
</html>
  body {
                padding: 20px;
            }
            
            .yui3-dd-chooser-hidden {
                display: none;
            }

            .yui3-dd-chooser-content {
                background-color: #F1F1F1;
                border: 1px solid silver;
            }

            .yui3-dd-chooser-content li {
                padding: 5px;
            }

            .yui3-dd-chooser-content li:hover {
                background-color: silver;
            }

            #btn-color {
                padding: 3px;
                background-color: #F1F1F1;
                border: 1px solid silver;
            }

External resources loaded into this fiddle: